Limit single hosts bandwidth through IPSEC tunnel 2.1.4

Hello - I am currently running Dell AppAssure 5.4 for backup - replicating from my backup server to an offisite backup server through a VPN tunnel. This replication is constant - and it's soaking up all my bandwidth (currently running a 20 down 30 up fiber connection).

I've tried creating a limiter and bringing it into a rule with my server as the source and applying it to the LAN interface setting it above the default allow lan to any rule, and creating a floating rule - but nothing is working. I only want to limit this hosts traffic over the VPN as we access several applications on servers on the far side through this tunnel as well.

Usually you open it up to allow initial synchronization, and then throttle it back for incrementals. He needs to determine the size of the dataset he's sending per day and then break it down to see how much bandwidth he has to play with, how much he can dedicate to the backup job, and how long it will take at that rate. Then he can craft a limiter that gives it just enough bandwidth to complete the daily job in the allotted time.